netdevsim: move shared dev creation and destruction into separate file

To make code easier to read, move shared dev bits into a separate file.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/netdevsim/Makefile

@@ -3,7 +3,7 @@
 obj-$(CONFIG_NETDEVSIM) += netdevsim.o
 
 netdevsim-objs := \
-	netdev.o devlink.o fib.o \
+	netdev.o devlink.o fib.o sdev.o \
 
 ifeq ($(CONFIG_BPF_SYSCALL),y)
 netdevsim-objs += \